br.com.objectos.rio.dhcp.DhcpServerConfigurationEdit Maven / Gradle / Ivy
/*
* Copyright 2016 Objectos, Fábrica de Software LTDA.
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not
* use this file except in compliance with the License. You may obtain a copy of
* the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations under
* the License.
*/
package br.com.objectos.rio.dhcp;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
/**
* @author [email protected] (Marcio Endo)
*/
public class DhcpServerConfigurationEdit {
private final DhcpServerConfiguration configuration;
private final List commandList = new ArrayList<>();
DhcpServerConfigurationEdit(DhcpServerConfiguration configuration) {
this.configuration = configuration;
}
public DhcpServerConfigurationEdit addHost(Host host) {
Objects.requireNonNull(host);
commandList.add(new AddHost(host));
return this;
}
public DhcpServerConfigurationEdit clear() {
commandList.add(Clear.INSTANCE);
return this;
}
public void commit() {
synchronized (configuration) {
configuration.lock();
for (Command command : commandList) {
command.execute(configuration);
}
}
}
private static class AddHost extends Command {
private final Host host;
public AddHost(Host host) {
this.host = host;
}
@Override
void execute(DhcpServerConfiguration configuration) {
configuration.addHost(host);
}
}
private static class Clear extends Command {
static final Command INSTANCE = new Clear();
private Clear() {
}
@Override
void execute(DhcpServerConfiguration configuration) {
configuration.clear();
}
}
private static abstract class Command {
abstract void execute(DhcpServerConfiguration configuration);
}
}